Iberia, Missouri, sits in USDA hardiness zone 6b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Reliable performers under these conditions include cabbage, hazelnut, lavender, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Iberia, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Iberia lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Iberia — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Iberia — the short answer
Iberia, Missouri: USDA zone 6b, about 223 days between hard freezes, across 564 acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~223
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 564 acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 6b is Iberia's average, not your lot's — a low corner or a tree line moves it. Against Iberia's 223-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Iberia
Each reading below is measured for Iberia itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredIberia runs about 223 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredIberia sits in USDA hardiness zone 6b.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Iberia is in
Iberia sits in the Ozark Highlands — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Iberia's own centroid rather than borrowed from Miller County.
What Grows in Iberia
Every plant below cleared Iberia's own zone 6b and its 223-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Iberia?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 28; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 28 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 6 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Iberia
Survey cells within 31 miles of Iberia checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 336 miles off. What to watch for.
What's on the federal record near Iberia
Closest first, within ~10 miles of Iberia. Listing isn't leaking, and distance isn't exposure.
- LAW OIL CO INCUnderground Storage Tanks · 300 ft
- CASEYS GENERAL STORE #1253Underground Storage Tanks · 750 ft
- EADS MOTOR COUnderground Storage Tanks · 1000 ft
- BAKERS TRUCKING SVC LLCBrownfields · 1200 ft
- GOOD FELLAZBrownfields · 1200 ft
- IBERIA R-5 SCHOOLSUnderground Storage Tanks · 1500 ft
- GLAWSON FARMSCAFO · 1700 ft
- T39N R12W 19CCC1Nitrate · 2200 ft
- T39N R12W 19CBC1Nitrate · 0.6 mi
- IBERIA MAINT BLDGUnderground Storage Tanks · 0.8 mi
- JIMS AUTO BODYBrownfields · 1.7 mi
- SCOTT RODDENCAFO · 2.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Iberia's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Iberia.
Total Sites
38
within ~10 miles of Iberia
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Iberia
Severity Distribution
within ~10 miles of Iberia
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Iberia, CAFO runs higher than the national average — 11 sites within ~10 miles of Iberia. That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Check your specific parcel in Iberia
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Iberia average
Your land is one point inside Iberia
Everything above resolves to Iberia as a whole — one PHZM band and one 28°F frost record, read across 564 acres. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at city scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Iberia Average
Iberia Average
- ●USDA Zones 6b, averaged across Iberia
- ●One soil character for all of Iberia
- ●Frost dates read at Iberia's scale: Mar 28 to Nov 6
YOUR Parcel
- ✓Your exact zone, not Iberia's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Iberia
Pull a site-specific report for your exact address in Iberia, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Iberia averages can't show:
We read public map data around Iberia — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Iberia average
How we know this about Iberia
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Iberia’s own record; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at city grain anywhere on this page — there is no city-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Iberia
When does frost risk typically end in Iberia?
The last hard freeze (28°F) in Iberia typically lands around Mar 28, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about Apr 18.
When is the first frost in Iberia?
The first hard freeze (28°F) in Iberia typically arrives around Nov 6, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 23, so the watching starts about Oct 7 — about 223 days after the spring freeze cleared.
How long is the growing season in Iberia?
Measured between 28°F hard freezes, Iberia sees about 223 frost-free days — roughly Mar 28 through Nov 6, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 18 to Oct 23, about 188 days.
Is the soil safe to grow vegetables in Iberia?
The federal record around Iberia shows 38 documented sites, mostly Underground Storage Tanks entries (12), the nearest Underground Storage Tanks record under a tenth of a mile out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Iberia?
From about Oct 7 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Nov 6 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Nov 6. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Iberia's scale — its 6b band and its 223-day season. Your yard writes its own version of Iberia's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Iberia’s own scale
7 of the readings below were taken at Iberia's own scale — its own ~223-day season between 28°F freezes, the 564 acres it covers and 38 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Iberia's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Iberia's own 28°F hard-freeze dates, about Mar 28 and Nov 6 and the ~223-day span between themNOAA 1991–2020 Climate Normals
- 38 documented contamination sites on the federal record near Iberia, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Iberia's boundary and the 564 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~223-day seasonGrowable Ground crop-matching engine
- The ecoregion at Iberia's own centroid, the Ozark HighlandsUS EPA Level III Ecoregions
- Lanternfly survey cells around Iberia checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Iberia's 564 acres read through its county's SSURGO summaryfrom Miller County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Miller County
- The growing challenges every Missouri grower plans around — written at state scale, so they stay on the state guidefrom Missouri
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Miller County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Iberia's 564 acreswhy one lot differs from the next →
- Which side of Iberia you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 564 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Iberia-wide figureread your own land →
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